Anything with an ICE engine emits CO2. 60 years ago a V12 then the V8 normally aspirated engine produced 400-500BHP, Today a 1.6LT engine that two men can lift on your kitchen table produces 1,000BHP. this is achieved by compressing more Oxygen in the head forced in by the turbo, creating a bigger bang and emitting burnt gases (Oxygen) from the exhaust that tuned to extract gases as fast as possible (CO2). Even renewable fuels need Oxygen to create an explosion. Remove OXYGEN no bang.
PS I can see motorist being told you can`t drive your old cars, but the highly paid drivers can for sport, a political timebomb, you no longer do what you want you do as your told.